Electroplated insulated conductor of electricity



- (NoModeL) T. & J. GOOHRAN.

Electroplated Insulated Conductor of Electricity.

No. 236,986. I Patented Jan. 25', I881.

WWW; as v: x Z% @w 4/ mam PETERS. PHQTO-UTHOGRAPNEE WASHINGTON u C 7 UNITED STATES PATENT OFFICE.

THOMAS GOGHRAN AND JAMES GOOHRAN, OF BROOKLYN, NEW YORK.

ELECTROPLATED JNSULATED CONDUCTOR 0F ELECTRICITY.

SPECIFICATION forming part of Letters Patent No. 236,986, dated January 25, 1851. Application filed October 13, 1880. (No model.)

To all whom it may concern:

Be it known thatwe,THOMAs UOGHRAN and JAMES GoeHnAN, both citizens of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Electroplated Insulated Conductors for Electricity, of which the following is a specification.

This invention consists in the combination, in an electric conductor, of two primary conductors, each composed of a core of metal wire, a non-conducting envelope surrounding said core, a conducting-layer formed on the nonconducting envelope, and a second nonconducting envelope surrounding the conductinglayer, said non -conducting envelopes being partially cut away to expose the end of the core and a portion of the conducting-layer in each of the two primary conductors, a connection between the cores of the primary conductor, formed by twisting these corestogether, a non conducting envelope surrounding this connection of the cores, a metal wire connecting the conducting-layers of the primary conductors, and a non-conducting envelope surrounding this connecting-wire and the exposed parts of the conducting-layers, so that a connection is made between the cores of the two primary conductors, and another connection between the conducting-layers of said primary conductors and said connections are protected against moisture or thein'fluence of the atmosphere.

Our invention is illustrated in the accompanyin g drawings, in which Figure l is a perspective view of a portion of a conductor constructed according to our invention. Fig. 2 is a transverse section of same. Figs. 8, 4, and 5 illustrate the manner of connecting two of our conductors.

Similar letters indicate corresponding parts.

In constructing our conductor we commence with a wire of copper or other good electrical condnctin g material, as shown at c, Fig. 1. This wire 0 is incased in a sheath of india-rubber, gutta-percha, or other equivalent non-conductin g material, and on this sheet is formed, by electrolysis, a conducting-layer, e, of copper or other conducting material, which layer may be again incased in a sheath, f, of india-rubber or other non-conducting material, and so on.

It will be seen that the core 0 and the conducting-layers c g are exposed at their ends, the non-conducting layers (7, f, and It being partially cut away, so that the core 0, and also the conducting-layers e y, can be conveniently connected, each to a separate battery or source of electricity, and different electric currents can be sent through our conductor without difficulty. The several layers may be produced by passing the wire 0 first through a vatcontaining the non-conductingsubstance ina molten condition, then through a drying-oven, then through a vatcontaining the solution for electroplating, then again through a vat containing a non-conducting substance in amolten condition, and so on.

In order to make connections between two of our conductors, we proceed as follows: The copper wires 0 of the two conductors which are to be connected are twisted together, as shown in Fig. 3, the insulating-layers at having been removed, so as to expose a sufficient length of the inner wires, 0. After the connection is made a thin layer, 2', of india-rub ber or gutta-percha, is formed to embrace and protect the exposed parts, (see Fig. 4,) and then a thin copper wire, j, is wound round the second conducting-layers, e e, of both conductors and round the layers t', the loose ends of said wires being finally connected to each other. The copper wire j is then incased into a sheath, 7c, of india-rubber or other non-conducting substance, and a thin copper wire, I, is wound round the third conducting-layers, g

g, and round the non-conducting sheath 7;, as

shown in Fig. 5, and so on, the whole being finally bound up with an insulating material.

The advantages derived from this invention are as follows:

First. Any number of conductors can be readily connected to batteries or other generators of electricity, and brought into a narrow compass of space, and at the same time be perfectly insulated from each other.

Second. Our conductors are applicable for burglar-alarms, as every attempt to cut the wire would almost certainly, in breaking an intermediate non-conducting layer, force to gether the two conductors separated thereby, and thus close a circuit between two opposite battery-poles, connected to said conductors,

respectively, and cause the operation of an electrical signal apparatus included in the said circuit.

Third. The advantages for making powerful in duction-coils are obvious. In passing an electric circuit through'the inner wire, 0, a current is in duced in the next conducting-layer, e, which, in fact, takes the place of the secondary wire of the induction-coil, and which embraces the primary wire 0 throughoutits whole length,whereby the effect of the induction-coil is materially improved. An induction coil thus constructed, however, forms the subjectmatter of a separate application for a patent, and we do not therefore give a more detailed description in this specification.

Fourth. The metallic or electrical coating is also available, when brought into connection with the earth,for conveying anyinduced currents.

Fifth. If in Fig. 1 the outside conductinglayer his left off, the metallic conducting-layer y will act as an effective protector for the insulating layer or layers embraced by it.

WVe do not claim as our invention the production of metallic layers upon iusulatinglayers by electrolysis; neither do we claim, broadly, an electric-comluctor composed of one or more non-conductin g layers and two or more conducting-layers formed on said non-conductin g layers by electrolysis, such having already been described in the English Patent No. 27 7 of 1858.

What we claim as new, and desire to secure by Letters Patent, is-

The combination, in an electric conductor, of two primary conductors, each composed of a core, 0, of metal wire, a non-conducting envelope, d, surrounding said core, a conducting layer, 6, formed on the non-conductingenvelope d, and a second non-conducting envelope, f, surrounding the conducting-layer c, said non-conducting envelopes d f being partially cut away to expose the end of the core 0 and a portion of the conducting-layer e in each of the two primary conductors, a connection between the cores 0 c of the primary conductors formed by twisting these cores together, a non-conducting envelope, 1', surrounding the connection of the cores. a metal wire, j, connecting the conducting-layers e e of the primary conductors, and a non-conducting envelope, k, surrounding the connecting-wire j and. the exposed parts of the conducting-layers c c, substantially as and for the purpose set forth.

In testimony whereof we have hereunto set our hands and seals in the presence of two subscribing witnesses.

THOMAS OOOHRAN. L. s] JAMES OOOHRAN. lL. s.|

Witnesses:

W. HAUFF,

E. F. KASTENHUBER. 

